Speaker
Dr
Taichi Kawanai
(Forschungszentrum Jülich GmbH)
Description
We report on updates of our $B$-physics program using domain-wall light quarks and nonperturbatively tuned, relativistic $b$-quarks by adding measurements obtained with dynamical and physical light quarks. We present progress towards improved determinations of the $B$-meson decay constant $f_B$, the ratio $f_{B_s}/f_B$, and the $B\to \pi \ell\nu$ semi-leptonic form factor. Our results are based on the RBC/UKQCD 2+1 flavor gauge field configurations with (M\"obius) domain-wall fermions and the Iwasaki gauge action at two lattice spacing of 0.086 fm and 0.11 fm.
Primary author
Dr
Taichi Kawanai
(Forschungszentrum Jülich GmbH)
Co-author
Dr
Oliver Witzel
(University of Edinburgh)
